Oliver, > Does it happen with 2.6.29? > Could you get dmesg of 2.6.2(7/9) with CONFIG_USB_DEBUG and debug > activated in drivers/usb/class/cdc-acm.c ? interesting, the dmesg output is not that talkative: Apr 22 11:50:37 tomodachi kernel: [ 623.236068] usb 2-1: new full speed USB device using uhci_hcd and address 2 Apr 22 11:50:37 tomodachi kernel: [ 623.400102] usb 2-1: New USB device found, idVendor=ffff, idProduct=0005 Apr 22 11:50:37 tomodachi kernel: [ 623.400107] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Apr 22 11:50:37 tomodachi kernel: [ 623.400111] usb 2-1: Product: USBSerial Apr 22 11:50:37 tomodachi kernel: [ 623.400114] usb 2-1: Manufacturer: LPCUSB Apr 22 11:50:37 tomodachi kernel: [ 623.400117] usb 2-1: SerialNumber: DEADC0DE Apr 22 11:50:37 tomodachi kernel: [ 623.400654] usb 2-1: configuration #1 chosen from 1 choice Apr 22 11:50:37 tomodachi kernel: [ 623.453590] cdc_acm 2-1:1.0: ttyACM0: USB ACM device Apr 22 11:50:37 tomodachi kernel: [ 623.457094] usbcore: registered new interface driver cdc_acm Apr 22 11:50:37 tomodachi kernel: [ 623.457100] cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters even though: $ zcat /proc/config.gz | grep CONFIG_USB_DEBUG CONFIG_USB_DEBUG=y maybe it did not recompile the cdc-acm module after I changed the CONFIG_USB_DEBUG setting in .config? I'll do a clean recompile.. Akos -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
